package com.structure;

public class TreeNode {
	  public int val;
	  public TreeNode left;
	  public TreeNode right;
	  public TreeNode() {}
	  public TreeNode(int val) { this.val = val; }
	  public TreeNode(int val, TreeNode left, TreeNode right) {
	      this.val = val;
	      this.left = left;
	      this.right = right;
	 }
}